Effect of Cold Work on Intergranular Corrosion Cracking of Sensitized Stainless Steel

概要

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In this paper, it is clarified that the resistance of AISI304 stainless steel to intergranular corrosion cracking in acid copper sulfate solution (Strauss solution) increased with cold working before or after sensitizing heat treatment. To discuss the effect of martensite induced by cold working, the temperature of cold working is chosen two levels: 100℃ and -196℃. The susceptibility for the intergranular corrosion cracking is scarcely affected only by the presence of martensite in austenite matrix, but is greatly affected by the martensite in which the precipitation of carbides is occured. Moreover, the correlation of the susceptibility for corrosion cracking and the rate of ordinary intergranular corrosion is also discussed.
大阪大学の論文